Ahead VGA Eagle

@8100.ADF Ahead VGA Eagle Display Adapter
   Custom ADF created by Ryan Alswede based on the C&T F82C451 documentation.
@8100.ADF VGA Eagle and VGA Eagle-CV
   We don't have the original ADF file for this adapter. Do you? Let Us Know!

Ahead V5000 Programming (extracted from Advanced Programmer's Guide to SuperVGAs)

Ahead VGA Eagle Rev. D
Ahead VGA Eagle BVE Rev. C
Video ROM


Ahead VGA Eagle Rev. D FCC ID FWJ4RNEAGLE [P] [P]

J5 DB15 Video connector
J7,8 3-pin jumper
U1-4,6-9 256Kx4 DRAM
U14 Ahead V5000-50PC-B
U17 25.175 / 28.322 MHz dual osc
U18 44.900 / 40.000 MHz dual osc
U19 Pads for osc
U22 Video BIOS ROM
U26 Triad Semi TR9C1710-50PCA RAMDAC
U32 65.000000 MHz osc
W1 2x2-pin jumper
W2,3 2-pin jumper
Y1 Pads for xtal

U1-4,6-9 staggered DIP18/20 sockets (one or the other socket variant may be missing). 256Kx4 DRAM, NEC D424256C-70 or equivalent.

U14 Ahead V5000-50PC-B - pin-compatible alternative to C&T F82C451 (possibly rebadged)


Ahead VGA Eagle BVE Rev. C FCC ID FWJ4RNEAGLE [P] [P]

J2 Pads for 6-pin header
J5 DB15 Video connector
J7,8 3-pin jumper
U1-4,6-9 256Kx4 DRAM?
U14 Ahead V5000-50PC-B
U17 56.6440 MHz osc
U18 44.900 / 40.000 MHz dual osc
U19 50.350 MHz osc
U22 Video BIOS ROM
U26 Triad Semi TR9C1710-50PCA RAMDAC
W1-3,7,8 2-pin jumper
W4-6 Pads for 2-pin jumper

U1-4,6-9 staggered DIP18/20 sockets (one or the other socket variant may be missing). 256Kx4 DRAM?

U14 Ahead V5000-50PC-B - pin-compatible alternative to C&T F82C451 (possibly rebadged)

Note: This is a BVE adapter - a rather unusual one at that. Most BVE adapters lack the MME portion of the MCA fingers, resulting in a wide gap between the base (8-bit) portion and the BVE extension. Not here, so at first glance it looks more like an AVE adapter.


Video ROM (dumped by David Beem)

Device: 1x 27C256 32Kx8 EPROM

Eagle203 AHEAD SYSTEMS INC., EAGLE-II BIOS VER 2.03 (16k bytes), COPYRIGHT 1990 (Rev. D card)
   Less than 16K actually used; no fonts
Eagle300 AHEAD SYSTEMS INC., EAGLE-III BIOS VER 3.00, COPYRIGHT 1990 (BVE Rev. C card)
   Aprrox. 28K used; contains fonts

Content created and/or collected by:
Louis F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
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